Frame Rate Calculation - Epson S1D13704 Technical Manual

Page 70

9 Frame Rate Calculation

S1D13704
X26A-A-001-04
The following formulae are used to calculate the display frame rate.
TFT/D-TFD and Passive Single-Panel modes
FrameRate = ---------------------------------------------------------------------------------------- -
(
Where: f = PClk frequency (Hz)
PCLK
HDP = Horizontal Display Period = ((REG[04h] bits 6-0) + 1) x 8 Pixels
HNDP = Horizontal Non-Display Period = ((REG[08h] bits 4-0) + 4) x 8 Pixels
VDP = Vertical Display Period = ((REG[06h] bits 1-0, REG[05h] bits 7-0) + 1) Lines
VNDP = Vertical Non-Display Period = (REG[0Ah] bits 5-0) Lines
Passive Dual-Panel mode
FrameRate = -------------------------------------------------------------------------------------------------- -
×
2
Where: f = PClk frequency (Hz)
PCLK
HDP = Horizontal Display Period = ((REG[04h] bits 6-0) + 1) x 8 Pixels
HNDP = Horizontal Non-Display Period = ((REG[08h] bits 4-0) + 4) x 8 Pixels
VDP = Vertical Display Period = ((REG[06h] bits 1-0, REG[05h] bits 7-0) + 1) Lines
VNDP = Vertical Non-Display Period = (REG[0Ah] bits 5-0) Lines
f
PCLK
) × (
HDP + HNDP VDP + VNDP
f
PCLK

VDP
( ) ×
HDP + HNDP ----------- - +

2
*
Epson Research and Development
Vancouver Design Center
)

VNDP

Hardware Functional Specification
Issue Date: 01/02/08